Bookkeeping machine



Oct. 7, 1941'. H. K. F. EWALD BOOKKEEPING MACHINE Filed Sept. 3, 1935 7 Sheets-Sheet l H, EWa'cZ C 7, 1941 H. K. F. EWALD BOOKKEEPING MACHINE Filed Sept. 3, 1955 7 Sheets-Sheet 2 oct. 7, 1941. H K- F EWALD 2,258,090

BOOKKEEPING MACHINE Filed Sept. 3, 1955 '7 Sheets-Sheet 3 Cet. 7, 1941.

H. K. F. EWALD BOOKKEEPING MACHINE Filed Sep. 5, 1935 7 Sheets-Sheet 4 MK Nk Oct. 7, 1941, H, K, F" EWALD 2,258,090

BOOKKEEPING' MACHINE Filed Sept. 5, 1955 7 Sheets-Sheet 5 243 244 L 24j 2355, I 365 K .1, E ",l f T y" zo 246i@ v k & 282 247 242 240/ 2;; 26a 238 283 245 4 242 Z 2.37 j67 )A246 234 Oct. 7, 1941. H. K. F. EWALD 2,258,090

BOOKKEEP ING MACHINE Filed Sept. 3, 1935 7 Sheets-Sheet 6 Oct. 7, 1941. H K F, EWALD 2,258,090

BOOKKEEPING MACHINE Filed Sept. 5, 1955 7 Sheets-Sheet 7 Patented Oct. 7, 1941 UNITED .sTATEs PATENT OFFICE BOOKKEEPING MACHINE Heinrich Konrad Friedrich Ewald, Chemnitz, Germany, assignor to Wanderer-Werke vorm. Winklhofer & Jaenicke Akt-Ges., Schonau- Chemnitz, Germany Application september 3, i935, serial No. 39,065 In Germany September 7, 1934 (Cl. 23S-60) 6 Claims.

Fig. 15 is across-section on the line |5|5 of Fig. 14 showing holding means for the control object is to provide an improved power trans-1.

mission between the paper carriage and the various control devices of the machine. 'I'hese objects of the invention are mainly achieved by arranging the control members beneath the two guide tracks of the paper carriage and by arranging said guide tracks widely spaced from each other. Further objects will be apparent from the following description taken in connection with the accompanying drawings. l

A machine embodying the features of the invention is illustrated by way of example in the accompanying drawings in which:

Figure 1 is a general side elevation partly in section of the bookkeeping machine seen from 'i the drive side .with the covering hood removed; Fig. 2 is a detail, shown on a larger scale and partly in section, of mechanism for the release of the paper carriage in its working condition;

Fig. 2a is a side view of one end of the platen; Fig. 3 is a section of Fig. 2 taken on the line 3 3;

Fig. 4 is an elevational view of mechanism for the automatic subdivision of printing;

Fig. 5 is a plan view of the printing mechaf nism shown in Fig. 4;

Fig. 6 is a side View showing the skip or jump over mechanism for the carriage;

Figs. 7 and 8 are detail side views showing the parts of Fig. 6 in two different positions;

Fig. 9 is a detail side view showing mechanism for controlling the carriage return;

Figs. 10 and 11 are similar views showing the parts of Fig. 9 in two different positions;

Fig. 12 is a plan view showing the mechanism for counter-spring movement of the paper carriage and mechanism for a paper carriage return line spacing;

Fig. 13 is a section of Fig. 12 taken on the line |3|3;

Fig, 14 is a side view showing a change-over mechanism for conditioning an accumulator for subtraction;

Figs. 14a and 14h show details of Fig. 14 on a larger scale;

members on the paper carriage;

Fig. 16 is a partial section on the line |6|6 of Fig. 15; 4 Fig. 17 is a section of Fig. 15 taken on the line Il-Il; and

Figs. 17-19 show various details of Figs. 15 and 16.

The bookkeeping calculating machine illustrated by way of example in the drawings is Aprovided in its front portion with a main shaft for driving the machine and with rack sectors 3 which can be set by keys. By means of the rack sectors 3 numbers can be transferred into various accumulators or numbers stored in these accumulators can be taken out of them. In the machine illustrated, there is provided an adding and subtracting accumulator 3|1 directly engaging the rack sectors 3. 'I'he machine also includes a plurality of accumulators |55 which can be driven by intermediate members common to them, for example, racks |13 having teeth on both edges, the teeth engaging gears of the accumulators |55. 'I'he racks are actuated by separate tooth sets |14 on the rack sectors 3. In the machine shown in Fig. 1 three of the accumulators |55 are mounted between plates 2|! which are firmly connected to a main base plate 4 consisting preferably of a smooth steel plate. v'I'his plate together with the plates 2|9 constitute a firm frame in which are mounted the various operative groups of which the machine consists. On the rear part of theframe, 4, 2|9, there is mounted a similarly constituted frame consisting mainly of side plates 220 and a tcp plate 222. .This frame 220, 222 serves as a support for the paper carriage l0 and also carries a number of stops and control devices which cooperate with the paper carriage. The frame is removably connected with the main base plate 4 by screws 22|.

A plate 6 is removably mounted by means of screws 1 on the plate 222; theplate 6 being preferably horizontal and has attached thereto guide rails 8 which may, for example, be riveted to the plate. The rails 8 together with a pair of inverted guide rails 9 and rollers or balls 36 inserted between cooperatingrails, form the guide tracks for the paper carriage I0. The paper carriage I0 has a base plate I| and a plurality of side walls i2, I3 in which a platen roll I4 is rotatably mounted. Types l5 on type bars I8 cooperate with the platen roll for printing. The type bars I6 are operated from the rack sectors l and when the latter are set the type bars assume corresponding levels for correct printing. Printing is eifected by means of hammers i1 which impel the type bars |8 towards the platen roll I8. 'The printing strains are well taken up by the carriage guide means 8. 8. In the base plate of the paper carriage is provided an opening I8 for the reception of a frame composed, for example, of a front bar 20, a rear bar 2| and two lateral connecting braces 22 (Figs. -16). The side braces 22 of the frame 20, 2|, 22 rest upon the base plate o! the carriage. The bracci members 22 are provided on their outer sides with counter-sunk bores 28 (Figs. 15 and 16) into which rotatable pins 28 each of which is provided with a screw thread 25 and operating knob 28 can enter. The axes of rotation of the pins 28 are slightly displaced in downward direction relatively to the axes of the counter-sunk bores 28, the ends 81 of the pins being tapered. By these means when the screw pins 28 are screwed home, the frame 20, 2|, 22 is brought into a definite determined position as can be easily understood from Fig. 16.

The front bar and the rear bar 2| are provided with opposite aligned slots 21 preferably milled therein. These slots 21 receive bars 28 serving as holders of control members, the bars 28 have preferably the form of cross-section shown in Fig, 16 which is interrupted at several places by recesses or slits 28 (Fig. 15). The two ends of each bar 28 are preferably so formed that they fit in the slots 21 of the frame 20, 2|, 22.

Below the front bar 20 which in the machine illustrated has a somewhat smaller thickness than the rear bar 2|, a stop 3| is fixed on a rotary rod 30 (Figs. 1, 2, 3 and 6). The rod 80 rotates in bearings 82 on the plate 8 (Fig. 3) by means of a spring 33 which constantly urges the rod in counter-clockwise direction, view from the left in Fig. 3, whereby the stop 8| can assume the position shown in Fig. 2 in which it bears against one of the control member holders 28 when the paper carriage is drawn in its working direction by means of a carriage operating spring. Upon movement of the paper carriage I8 in the opposite direction, the opposite side of the stop 3| comes into contact with the control member holders 28, and this side of the stop 3| having a ramp or cam surface 35 (Fig. 3), when the paper carriage is moving in this direction it will not be arrested by stop 8|. 'I'he paper carriage, on the other hand, in this direction of movement imparts through each control member holder 28 a clockwise rotation, view from the left in Fig. 3, to the stop 8|, and the latter after passage of each holder 28 is at once restored by the spring 33 into its initial or locking position. This locking position is determined by a lock member 88 (Figs. 3 and 6) which can bear against an abutment |88 fixed to the plate 8. In the machine illustrated in Fig. 3, the abutment |88 is a yielding abutment consisting of a sleeve containing a ball pressed outwardly by a spring.

The release of the control member holders 28 forming stops for the carriage escapement (Fig. 2) by the counter stop 3| in the machine illustrated is effected in dependency-on the niachine drive, namely, by the shaft 88 operated in each machine operation. The disk 88 has two pins 300, 30| (Fig. 2) serving to guide an actuating member 308 provided with slots 802, 303. The actuating member 308 is urged to the right (Fig. 2) by spring 305 and thereby bears against a roller 808 on a freely rotatable disk 88`. The disk 881 has teeth 808 engaging a segment 308 fixed on the'rod 80. Also the disk 801 may be provided with a spring whereby even when the paper carriage is removed and thereby the disc 301 comes out of engagement with the segment 808 a shoulder 8|8 o! the disc 881 will always bear against the plate 222.

The retraction of the counter stop 3| from the,

path of a holder 28 is enected in the following manner: During the forward stroke of a machine operation the disk 88 (Fig. 2) rotates in clockwise direction and the actuating member 308 slides past the roll 808 and is moved to the right by the spring 888. At the end of the backward movement the upper surface 888 of the actuating member 888 strikes against the roll 888 thereby rotating the disk 881 in clockwise direction and deilecting the counter stop 8| out of the path of the stop forming holder 28. On further upward movement of the roll 388 the latter comes out of engagement with the surface 888 of the actuating member 308, thus releasing the spring 33 (Fig. 3) whereby the latter at once swings the counter stop 8| into operative position before the next holder 28 comes into its path and the actuating member 888 is returned against the action of its spring 808 to its original position.

In the machine illustrated there is also provided a locking lever 811 (Fig. 2), a pin 3I| of which can obstruct movement oi the actuating member 888 to the right if after a machine operation the paper carriage is not to be impelled further. When the line spacing motor key is actuated this locking lever 811 is automatically deilected by link connections about its axis 3|2 in counter-clockwise direction into its effective position shown in Fig. 2.

'I'he above described operation of the lever 311 serves to render the carriage escapement device inoperative. When the machine has to book a plurality of amounts under each other in a particular column, without the carriage after each machine operation skipping to another column, then by actuating the line spacing motor key, the lever 811 is automatically turned counter-clockwise about its axis 8|2, whereby the operating member 808 cannot move to the right under the action of the spring 305 and, ii' the disc 88 turns during a machine operation nrst clockwise and then counter-clockwise the surface 388 does not come into contact with the roller 388 of the disk 301. In such a machine operation, therefore, release of the carriage by the operating member 308 does not take place.

To prevent the paper carriage I8 from striking too abruptly against the control member holders 28, the rod with the stop 3| is arranged to slide a small extent against the action of a` spring 88 (Fig. 3). This buffering is so arranged that the spring action will always cause the several control member holders 28 to give the paper carriage I0 a precise end position. Furthermore, the impact on the rod 30 can be rendered noiseless by providing, for example, a rubber cushion 88 (Fig. 3).

The holders 28, as shown in Figs. l5 and 16, have any desired number of slits or grooves 29 for supporting control members 80. These control members are intended for the initiation of various working operations of the bookkeeping machine in any desired paper carriage positions. They may all be of similar shape or they may have shapes adapted for the variousmodes of operation.

f also may have bevels |02.

'The control members 43, according to the position in which they are mounted on the holders 28, perform various functions. For example, in the machine illustrated, control members are provided whereby in determined paper carriage V positions, the printing mechanism can be automatically subdivided in such a manner that determined printing hammers I1, In a manner hereinafter described, can be rendered operative or inoperative for the purpose of automatic zero printing. For this Purpose, for example, there are used the row o control members 4| (Figs. l5 and 19), 83, 85 (Figs. 15a and 1'1) located nearest the platen |4. One group of control members 40 (Figs. 15 and 16) is assigned to the automatic coupling and decoupling of determined accumulators |55 (Fig. 1). Other control members 40 (Figs. l5 and 16) initiate determined modes of operation of the accumulators, for example, subtraction, non-addition, total and subtotal taking. Further control members 40 (Figs. l5 and 16) may be provided for controlling the automatic printing of the date. Other control members 40 may-.be provided for controlling a carriage escapement mechanism; others may be provided for controlling the automatic separation of positive and negative amounts so that such amounts are received in separate accumulators in different paper carriage positions in different columns of an account sheet. tional control members control the paper carriage restoring mechanism in such a manner that it can be restored from the end of a printing line to its initial or to an intermediate position, automatically. Other control members may be provided for any other desired working operations. The essential feature is, in this connection, that the controls shall be arranged internally between the two guide tracks of the paper carriage. By this means power transmission is effected from the part cooperating with the control members 4II, at a favorable place between spaced bearing members 8, 3 and a third carriage guide means, such as is frequently necessary, is dispensed with. The control members 48 (Fig. 16) may be provided with bevels 350 in order that they will strike more gently against setting devices |08 arranged on the fixed part of the machine. Obviously, the setting members The members 4I) shown have an intermediately located slot 352 by means of which they can be inserted from below onto the holder 28 at its place of small cross-section. The control members can be riveted or otherwise permanently connected in their positions on the holder 28 when determined working operations are to be permanently performed by the machine. Such a control member holder with control members set in position thereon can easily be inserted in the machine and removed therefrom. Also a changing of such control member holders for other paper carriage positions is quite simple. Since both the stops 28 for arresting the paper carriage and also the control members for all the working operations to be automatically carried out in a paper carriage position, can be removed by hand without diillculty, machines equipped with such control member holders can be rapidly conditioned for other operations.

When frequent reconditioning of the machine for quite different working operations has to be carried out, control member holders with control members riveted thereto are preferably not used. In this case, it is preferable to retain the control members on a holder by means of an inserted locking pin 353 as shown in Fig. 16, to prevent them from falling off. This pin can be withdrawn to permit the control member retained thereby to be removed or exchanged.

Control members can also be used in the form of pins 354, Figs. 15 and 16, for example, insertable in a holder 355 provided with corresponding holes. The pins 354 are preferably provided with heads which bear against the top of the holders and are retained by an upper retaining plate or locking member 356. This strong retaining plate 356 is well adapted to take up pressure transmitted to the pins or holders 354. On the retaining plate 356 projecting portions 351 are provided in which ilxing members 358 are rotatably mounted, the fixing members 358 having operating knobs. The fixing members 358, as illustrated, are screw-threaded at their lower end 358 and are thereby connected with the frame 20, 2|, 22 carrying the control members.

To subdivide the printing mechanism the control members according to Fig. 19 have a special shape as indicated by 4I comprising for example three lugs 42, 43, 44. In its working position, the control member 4| lies above feeler members 66 shown as bell cranks rotatably mounted on a common shaft 54 to the lower arms of which bell crank rods 45 are jointed (Figs. 1 and 4). The rods 45 are guided between the teeth of a comb 46 which is arranged above a shaft 63, Fig. 4, and attached to lateral disks 64. Against the front ends of the rods 45 pawls 5I are -urged by springs 50 whichpawls are rotatably mounted on pins 52 on thedownwardly bent ends of the locking' members 53. The springs 5I) have one end attached to the pawls 5| and the other end to lower extensions 1| of the locking members 53 (Fig. 4). The locking members 53 which are rotatable on a shaft 41 are acted upon by springs 55 and are provided with shoulders 56 engaging shoulders 51 of the printing hammers |1. The printing hammers I1 have horizontal arms cooperating with springs 58 by means of which the type bars I6 are impelled towards the platen roll I4 as soon as the printing hammers I1 are released by the shoulders 56 of the locking members 53.

The release movement of the locking members 53 is effected from the machine drive. For this purpose the main drive shaft I carries an arm 60 connected to one end of a link 6I, the other end of which link is jointed to an arm 62 on a shaft 63, said shaft having the disks 64 ailixed thereto (Figs. 1 and' 4). The disks 64 are connected to each other by a bar 65 on which levers 61 are rotatably mounted. The levers 61 are constantly urged in clockwise direction by springs 68 engaging one arm thereof so that as shown in Figs. 1 and 4, their other arms normally bear against lugs 69 on the rack sectors 3. As long as the lugs 69 are in their positions as shown in Fig. 4, the levers 61 cannot move clockwise. In this condition the lower extensions of these levers can slide on the lug 69 while the machine is in operation with the shaft 63 rotated from the drive shaft I. It isonly when a rack sector 3 has been elevated causing the lug 69 to move upwardly and thus release the levers 61 for movement in clockwise direction by springs 68, that the rotation of the shaft 63 at the end of the forward stroke of the machine, causes a hook 10 of the lever 61 to engage a lug 12 of the locking member 53, and releases the corresponding printing hammer i1 to strike the type bar i5.

The pawls 5l under the action of the springs 50 also engage lugs 12 of the locking members 53 (Fig. 5), but'in such a manner that the pawls 5| lle beneath the lugs 12 of the next lower printing device. When a locking member 53, the pawl 5| of which has engaged the locking member of the next lower printing device, is moved upwardly by means of its right-hand arm, Fig. 4, it also carries with it the next lower printing member and thereby also releases the hammer |1 of said member. If at this lower printing position the corresponding pawl 5| is also engaged with the next lower printing device, then also this further printing device is released for printing. In this manner all the type bars to the right of a certain printing position, as viewed from the front of the machine, in which a number is to be printed in a machine operation, are automatically released down to the lowest ordinal position, or to a printing device whereof the pawl 5| is out of engagement. Thus all the printing hammers up to this position are automatically released. Thereby zeros are automatically printed in all positions at which the type bars li are not set to digits by means of the racks 3.

According to the invention the pawls 5| when the machine is at rest lie out of engagement with the locking members 53. In this condition they lie, under the control of their springs 50, against the ends of the rods 45 and urge the lower arms of the bell cranks 50 against a rod 0| (Fig. 4). The rod 0| is fixed on arms 00 of the freely rotatable shaft 54. 'I'he rotation in clockwise direction of the shaft 54 under the action 'of the springs 50 is limited by an arm 10 having a roller 11 bearing against a shoulder on a cam disk 15. The number of rods 45 and bell cranks 50 corresponds with the number of ordinal places of the machine.

The cam disk is jointed to a link 15 which in turn is jointed to the end 02 of the rod 03. During the forward stroke of an operation of the machine the cam disk 10 has a clockwise rotation. At the beginning of this rotation, the roll 11 rolls off reach of the high portion on to the low portion of the cam disk 15, whereby the shaft 54 and the bell crank 50 can perform a counterclockwise rotation, and the rods 45 a right-hand movement under the influence of the springs 50 so that the pawls 5| at the beginning of the forward movement of the machine engage the lugs 12 of the locking members 53 and determine automatic zero printing of the printing mechanism.

When the lower arms of the bell crank 55 are rotated counter-clockwise in the course of the machine operation, their upper arms rotate upwards (Fig. 4). As soon, however, as one or a plurality of these horizontal arms is obstructed in its forward movement, for example, by the lugs 42, 42, 44 or contact surfaces of the control member 4| (Fig. 19), the corresponding bell cranks 66 remain in their positions of Fig. 1 as do likewise the corresponding rods 45 and pawls 5|. In the case of the locking members 53 which do not carry engaged pawls 5|, the locking members 53 0f the next lower printing devices are not carried along for automatic release of the corresponding printing hammer I1. On the other hand, automatic zero printing is rendered inoperative at the printing positions determined by the lugs 42, 43, 44. The main advantage of this arrangement according to the prsent invention is that the paper carriage has no contact during its motion with the means for rendering operative and inoperative the automatic zero printing at desired printing positions. Thus the paper carriage moves nolselessly in both directions at a slight distance above the control members or feelers 00. The control members 4| may be provided with anv desired number of lugs and the lugs may be arranged at any desired printing position. When various subdivisions are desired in different paper carriage positions, this can be rapidly and simply effected merely by sertilng correspondingly shaped control mem- Obviously holders 00 as shown in Fig. 1'1 can be used, said holders being arranged transversely on control member holders 04 (Figs. l5 and 18) and in which at determined positions corresponding to the printing positions, pins or stops 05 can be inserted for cooperating with the feelers to effect subdivision of the printing mechanism.

Some of the control members 40 of Fig. 1 cooperate with double-armed levers or setting devices |00 (Figs. 1 and 16), pivoted on a shaft 349. 'I'he levers |00 may also be in the form of bell cranks with arms of any desired length. The levers or equivalent members |00 may be provided with impact surfaces |02 cooperating with the control members 40. As shown, the right-hand ends of some of the levers |00 are connected by cables |03 with disks |05, (Fig. 1). freely rotatable on pins |04. Pins |00 on these disks |05 project into slots |01 in bars |00 urged to the right by springs which springs engage pins |00 of the bars |00 and pins ||0 of the disks |05. The various bars |00 are jointed at their forward ends to actuating disks ||2 rotatably mounted on a common shaft H3. Fach actuating disk ||2 has two striker pins ||4, I5 which can selectively cooperate with coupling rods H5, which serve for engaging the accumulators. The parts are preferably attached to common retaining plates removably attached to the base plate 4 and can thm be mounted and dismounted as units.

When a control member 40 imparts a counterclockwise rotation to a lever |00, (Eg. 16), and the corresponding cable |03 moves upwardly, the corresponding disk 05 thereby is rotated in counter-clockwise direction. By means of the spring I and the bar |00 the actuating disk I I2 is rotated and the striker pin ||4 presses one of the coupling rods ||5 downwardly. 'I'he coupling rods IIB have a slot l0 in their lower edge by means of which they engage in their downward movement with a pin ||5 in a yoke |20. The yoke |20 which has two arms, is pivoted about a pin |2| and in its rotation it reciprocates the clxlagpling rod ||0 which is engaged with the pin The coupling rods ||0 are jointed to levers |40 on shafts |40 on which are fixed cam disks |50 According to which instant of the machine operation the accumulator |55 comes into and out of engagement with the racks |13,` different calculating operations are performed by the accumulator |55.

As already stated, the engagement and disengagement of the accumulatorarev eiIected from the yoke by the pin ||9. 'I'he yoke |20 mits turn is in driving connection through a rod |23 attached to a joint pin |22, with an arm of a double lever |24 pivoted on a pin |25. The upper arm of this lever is forked and engages a pin |21 of a movable control head |30, serving for engaging the accumulators, which is guided in the machine frame by means of pins |3|, |32

and slots |33, |34. The control head has a broad front end carrying a plurality of pawls |35, |35, 31 and an impact surface |30 by means of which it can cooperate selectively with pins |40, |4|

of a drive disk |42 ilxed on the main shaft he@ |35 remains until at the end of the lorward stroke it is returned by the pin and the pawl |31. formation of the cam disks |50, the aforesaid raising and lowering of the accumulator axis |5| takes place duringmovement of the cam disks |50. By means of a spring |52, an exact bearing of the axis of the accumulator |55 on the cam disk will be ensured. For taking sub-totals the pawl |35 is engaged manually or automatically whereby at the beginning of the forward stroke the control head |30 is pushed to the right. 'I'he return movement of the control head |30 in sub-total taking is effected by means of the pin |4| and the impact surface |33.

Non-addition is effected by holding all the pawls |35, |35, |31 out of engagement during the whole machine operation. This may also be effected by hand in the usual manner through a non-add key, or automatically by the paper carriage.

In the machine illustrated, the engagement and disengagement of the, accumulator takes place entirely positively from the machine drive by themovement of the control head |30 and the parts |24, |23, |22 and ||5. In this connection, it is nevertheless, possible to effect a desired machine operation, to engage accumulators other than those which are to be autothe pawl only slightly against the action of the spring |45. At the beginning of the backward stroke the pin |40 then encounters the nose |44 of the pawl |35 and thereby moves the control head |30 to the right.

'I'he control head 30 remains in this right" hand position until at the end of the back stroke of the main drive shaft it is returned to its normal position by the pin 4| striking the impact surface |38.

The described operation of the machine in which the control head |30 is moved to the right at the beginning of the back-stroke and is returned to the left at the end of the back-stroke, is used for carrying out addition operations. At the end of the return stroke of the machine, the pin |4| on the disk |42, as previously described, will move the control head |30 back to the left and thus rotate in clockwise direction the cam disk of any engaged accumulator 55, whereby the accumulator axis, under the action of the spring |52, is shifted into the position shown in Fig. 1 in which the accumulator is out of engagement with the racks |13.

Each accumulator has its own tens-carrying mechanism which may be of any desired type. Preferably, however, a tens-carrying mechanism is used oi' the type in which tens-carry ing is first merely prepared and is subsequently completed after the actuator racks are disengaged. For adding and subtracting accumulators, tens-carrying mechanism such as shown in German Patent No. 467,756 may be used. Owing to the separate tens-carrying for all the accumulators, the machine illustrated may have a plurality of accumulators simultaneously engaged with the racks |13.

For taking a total the pawls |35, |31 are actuated (in known manner) manually or automatically but the pawls |35 are brought out of engagement. In this case the pin |4| in its counter-clockwise rotation at the beginning of the forward stroke encounters a shoulder 0| oi.'y

the pawl |35 and thus pushes the control head |30 to the right. In this position the control matically selected at a definite paper carriage position. For this purpose an engagement device is provided which automatically renders inoperative all conditioning operations set up by the paper carriage for engaging accumulators, as soon as an accumulator is engaged by means of a key assigned thereto.

For this purpose in the machine illustrated having four accumulators |55 three of which are varranged below the racks |13 the fourth bedisks ||2 are restored which had been given a clockwise rotation by the paper carriage movement upon shifting of the parts |03, |05, |08. Thereby the bars |08 are again moved forwardly with their guides |01 on the pins |05 against the action of the springs The disks |05 and the cables |03 can thus remain in positions given by the paper carriage movement. By the movement initiated by one of the slides |58, all the engaging devices operated by the paper carriage to engage accumulators are rendered inoperative.

Simultaneously the left-hand movement of the slide |50 also actuates through its lower shoulder |50, a pin on the actuating disk ||2 cooperating with the slide. Hereby the actuating disk I2 effects a counter-clockwise rotation in which the pin ||5 encounters the corresponding coupling rod ||6 and forces the latter downwardly. In this downward movement, the slot ||8 engages the pin |9 which in the next following machine operation renders operative the accumulator |55 corresponding to the depressed key. Obviously in the machine according to this invention, it is also possible by Owing to the previously described depressing a plurality of the keys |59 to render a plurality oi accumulators simultaneously operative.

In the present construction a skip key |10, by actuation of which the drive motor for the operation is coupled to the machine drive, in manner known per se, causes a bell-crank |1| to be rotated in clockwise direction, to the lower arm of which bell crank is jointed a link |12. The rear end of the link |12 isattached to a lever |19 pivoted at |90. By depression of the skip key the lever |19 is rotated in clockwise direction against the action of its spring |82. Hereby, a locking lever |89 is brought by means of a spring |89 into engagement'with a pin |85 to lock lever |19, Figs. 'I and 8, against premature backward movement. Also, the clockwise rotation of the lever |19 releases a pin |99 on a lever |88 from a notch |81. This enables the lever |88 to be rotated in counter-clockwise direction (Figs. 7, 8) under the action of a spring |90 and during this rotation the locking pawl |9| moves downwardly and under the action of a spring |92 bears against a square pin 99 on the downwardly shifted locking lever |89. The lever 88 then rotates under the action of the; spring |90 to such an extent that a lever |95 attached on the same shaft |99 as the lever |88, is brought to bear against the locking member 38. This limits the movement of the lever 88. If, for example, the stop 9| (Fig. 6) of the shaft is shifted to release carriage movement, then the locking member 98 moves intoy the position shown in Fig. 8 whereby the leverI |95 follows the tension of a spring |99 and can come below the locking member 98, as shown in Fig. 8. As long as the locking member 98 is thus held in its shifted position, the stopy 3| is kept out of engagement with the control member holders 38 of the paper carriage to perform any desired movement in the work direction under the action of its operating spring. On restoration of the lever |95 from the position shown in Fig. '1 to that shown in Fig. 8,

the lever |89 also is rotated under the action of the spring |90 by a certain amount. The locking pawl |9| then brings its lug under the square pin |93 and places itself, under the action of the spring |92, in the position shown in Fig. 8. 'Ihis effects a further limitation of the rocking movement of the lever |89 and also of the lever |95 because the square pin |99 brings its upper contact surfaces against the locking pawl |9|.

The paper carriage movement according to the present invention can be stopped by means of control members on the paper carriage. For this purpose control members 202 (Fig. 6) are used which cooperate with a double-armed lever |96. At the free end of this lever |96, there is connected a cable |91, attached to a lever |98. The lever |98 is fulcrumed at |99 and has a nose 200 for moving downwardly a pin 20| on the lever |95.

When a control member 202 engages lever |96, the cable |91 is pulled upwardly which movement gives the lever |98 of Figs. 6, 1, and 8 a counter-clockwise rotation causing it to urge the lever |95 in clockwise direction against the action of the spring |90. The rotation is of such extent that the upper end of the lever |95 comes out of the path of the locking member 38. Hereby, the stop 3| can again snap back under the action oi its spring and can be retained by the next holder 28. The lever |88 being rotated in counter-clockwise direction carries with it against the action of the spring |99 the locking lever |99 because the locking pawl |9| engages the square bolt |99 provided on the locking lever |99, and the lever |19 is released from its locking by the bar |95. Hereby the lever |19 can follow the urge of its spring |92 and restore the jump over key |19 to its normal position.

The same skip key l|19 in the machine illustrated can serve another purpose. Actuation of the key |19 and the resultingshifting of the parts then can take place in the same manner as above described. However, the restoration of the shifted parts is eifected by different means. This restoration takes place in dependency on a control member oi the paper carriage, only in quite speci-fic cases, remaining inoperative in other cases. Thus, for example, in one specific position of the paper carriage a control member may be so arranged that it arrests the paper carriage only when an accumulator contains a negative amount; but with a positive amount it will allow the paper carriage to continue its movement ior a certain extent, for example, one column width farther. Arrangements of this kind are used mainly in separating positive and negative balances.

For this purpose the machine illustrated has control members 99| (Fig. 6) on the holders 29 which members 99| cooperate with a doublearmed lever 992.v The free end o! this lever has attached thereto a cable 2|9 which is connected to a bell crank 2|2 rotatable on a ilxed fulcrum 2||, the vertical arm of which bell crank has jointed thereto a slide 2|9 in such a manner that this slide can also perform a small movement out of the plane of the drawing. The slide 2|9 is provided with a recess into which a pin 2|5 can project, which pin 2|5 is fixed on an arm 2|6 attached to the shaft |99. The recess 2|9 is of such size that the pin 2'|5 during the movement of the arm |95, eil'ected by depressing the key |10, will not strike against the left-hand edge of the recess. As the lever |95 is shifted to the right, it no longer holds the locking member 99 in the shifted position, so that the spring 99 can return the rod 99 and also the locking member 99 and the stop 9| into normal position, Fig. 3. On the other hand when the cable 2|9 is moved upwardly by a control member 99| on the paper carriage, the slide 2|9, along with its left-hand recess 2|9, the lever 2|5, and the lever |95, can rotate in clockwise direction to release the locking member 98. In this case, the carriage movement initiated by the skip key |19 is arrested by the control member 99|. This operation takes place automatically when, for example, the number in the balance totalizer is a positive number.

In the case of a negative totalizer content the paper carriage is to be arrested in a later column of the account sheet. For this reason the arrangement ls made such that the slide 2|9 although moved by the control member 99|, can be brought out of contact with the pin 2 5. This is effected according to the invention by connecting the slide 2|9 through an intermediate member 2|1 with a known device which varies its position upon change of the nature of the amount in the accumulator. For example, the intermediate member 2 |1 may be engaged by a device such as described in Austrian patent specification No. 142,720, the part designated in the drawings of the cited specification with the reference character 29 then forming the intermediate member 2|1, In Such a case the slide 2|9, when the amount in the accumulator is negative, is swung toward the back vertically relative to the plane in Fig. 6 by means oi' the intermediate member 2|1 so that it will arrive without contact with the pin 2 I5 and the arm 2|6. 'Ihus when a negative amount is in the accumulator the control member 36| has no iniluence on the control of the movement of the paper carriage. The paper carriage thus does not come to ,rest in a column setting in which it is to stop when the accumulator contains a positive amount, but it is movable further until such a time that a control member 292 reaches the carriage which as described in the foregoing cooperates with the lever n |93. The control member 202 is thus placed in a position for the next column setting of the paper carriage. Il', however, a control member 2||2 is not in position then the paper carriage will be carried further-'to the end of the printing line to then be automatically returned.

Automatic carriage restoration may be eiected as shown in Figs. 9, 10, and 11 by control members, as in the case of the other automatic working operations. For this purpose, there is prefer l ably arranged at the end of a printing line a stop member 230 which cooperates with a lever 232 in movement of the paper carriage in the direction of the arrow 23|. The lever 232 is loosely rotatable on a pin 233 and has a pin 234 connecting it to a link 235 which link is jointed to a pin 231 of a locking lever 236. The locking lever 236 is fulcrumed about a pin 233 and is constantly urged in clockwise direction by a spring 239. By means of a lug 240, the lever in the position of rest shown in Fig. 9 engages a pin 24| provided on a slidable rod 242 and thereby locks the rod 242 in such a manner that it cannot move to the left on its guide means 244, 245 underthe action of a spring 243. When the paper carriage reaches such a position, that a lever 232 encounters the control member 230, then the link 235 moves downwardly and releases the rod 242 for left-hand movement by moving the locking lever 236. Hereby a lever 246 on a shaft 241 receives a counter-clockwise rotation and engages a coupling through which an electric motor in\ known manner can be actuatedv to restore the paper carriage.

In the machine illustrated, the same electric motor, which also drives the machine, may be used for moving the .paper carriage against the action of a paper carriage spring. 'Ihe paper carriage spring for this purpose may engage a iiexible cord 34, Fig. 12, the end of which is anchored on a projecting portion 248 on the paper carriage. The housing for the paper vcarriage spring may be mounted on'an extension of the plate 6, not shown, which plate can be removed with the paper carriage by means of the screws 1.

Paper carriage movement by the drive motor is effected through a flexible cord 249 and a windlass 250 connected to a gear wheel 25| (Figs. 12 and 13). This gear wheel 25| engages a rack 252 on the paper carriage (Fig. 13). By coupling the drive motor with the carriage restoring mechanism by means of a carriage return control member 230, the paper carriage will automatically be returned to the beginning of the line.

In the machine illustrated the arrangement is such that the rack 252 is not rigidly connected to the paper carriage. It is constantly urged t the left, as seen from the front of the machine, by a spring 253 until a rubber cushion 254 on the rack 252 engages the left-hand end of aslot 255 in the base plate of the paper carriage. If the rack 252 is moved to the right by the motor drive, the rubber cushion 254 nrst moves to the right, the spring 253 stretching until it bears against the right-hand end of the slot 255, whereupon it imparts its movement to the paper carriage.

Before the actual movement o! the paper carriage begins the advance projection of the rack 252 by means of the lateral teeth 256 rotates a gear 251. This produces rotation of a shaft 256 and of a pinion 259 engaging lateral teeth in a rod 266. The rod 266 can thus cooperate with a pm m (Fig. 2) of an arm m which actuates a line spacing wheel (Fig. 2a).

Restoring movement of the paper carriage .against its spring tension can also be setted by hand for being eilective. For this purpose, a lever 264, Fig. 9, is provided which is under the influence of a key, not shown. When this key is operated, the lever 264 is actuated against the actionv oi' a vspring 265, the locking lever 236 is released through a pawl 266 on said lever 264 engaging a pin 365, and the carriage restoring movement is rendered operative. After release of the key, the spring 265 will restore the lever 264, the pawl 266 then exerting no influence on the locking lever 236.v When the bar 242 is moved to the lei't, a slot 261 in this bar drives a pin 265 on a bell crank 269 which is rotatable on the shaft 233 and is connected by means of a link 211| to a lever |12. The left-hand movement of the slide 242 will then produce a counterclockwise rotation of the lever 21| thus the latter coming into the position shown in Fig. 10 inwhich it cooperates with the control member 212. The control member 212 is preferably set at the beginning of the printing line. When the lever 21| strikes the control member 212 in the direction of the arrow 213, at the beginning of the line, the lever 21| is rotated clockwise and thereby restores the slide 242 through the members 219, 269, 266. The carriage restoring mechanism is then disconnected by means of the coupling lever 246. In the right-hand position of be brought into normal position by a spring 233 'in which position it locks the slide 242 by the pin 24|. By engaging the locking lever 236, the link 235 also is again raised so that at the end of the line it can once more cooperate with a carriage return control member 239.

1n a plane oilset from the lever 264, the machine illustrated has a second lever 264a (Fig. 11) by means of which a pair oi' toggle levers 235, 28| (Fig. 9) and the lock lever 236 can be actuated. By operating the lever 264a at rst the toggle levers 28B, 23| are so operated that the lever 280 bears against the anchoring pin 282 of a spring 283 attached to the bell crank 269. Hereby the bell crank 269 is swung in the clockwise direction and the lever 21| is rotated counter-clockwise a certain amount. Then by the operated lever 264a the locking lever 236 is also swung aside whereby the slide 242 moves to the left and by carrying along with it the supporting pin 284, the bell crank 269 and the lever 21| coupled with it by the link 21|| are brought to a higher position than if the toggle levers 235, 26|

are not operated. Thus in this setting, in whichv the parts 230 and 236'come into cooperation,-

with the less projected stop member 299 (Fig. 11) As a result the paper carriage will finish its counter-spring movement at a more advanced column. In the machine illustrated the arrangement may be such that this simultaneous movement of the parts 233 and 238 may be effected by means of the arm 263:1 at the end of a machine operation when the line spacing motor key is held depressed during an entire machine operation.

According to the invention, the carriage escapement mechanism is combined structurally with an automatic line spacing mechanism. 'I'he line spacing is also derived from the disk 83 for which purpose this disk is provided with an upper projection 3|5 (Fig. 2) which in the position of rest bears against the bar 3| 3 of a yoke 3|8 which can rotate about the platen shaft 318. When the disk 33 at the beginning of the machine operation is rotated in clockwise direction,

' the yoke 3|8 under the action of a spring, not

shown, can follow in counter-clockwise direction and bring a pawl into engagement with the teeth of a ratchet wheel, shown in Fig. 2a. During the return stroke, the upper projection 3| I of the disk 63 bears against the bar 3|6 which extends over the whole width of the paper carriage. Thus the yoke 3|8 is rotated in clockwise direction, the ratchet pawl of the yoke in known manner advances the ratchet wheel by one tooth or a plurality of teeth.

For obstructing the line spacing in the described manner by engagement of the upper projection 3|5 of the disk 33 with the bar 3| 3 of the yoke 3|3 according to Fig. 2 there is provided a pawl 315. This pawl is normally in engagement with the yoke 3|8 and prevents rotation of the yoke. The pawl is only disengaged if line spacing is by depression of the line spacing key. This automatic line spacing by such machine operations which are to be performed in the same printing line is prevented.

The conditioning of themachine for total taking, sub-total taking, subtraction, non-addition, from the paper carriage, may be in principle effected by providing a carriage actuated mechanism which acts on the same actuating mechanism by means of which the machine can be manually conditioned to the respective mode of operation.

Such mechanisms are well known in the art nevertheless by means of an example it will be explained how the balance totalizer 3|1 may be conditioned for subtraction.

The balance totalizer 3|1 may, for example, (Fig. 14) be brought into and out of engagement with the rack sector 3, by means of a bracket, which may be of the same form as the control head |30 (Fig. i). The balance totalizer 3|1 comprises two sets of wheels journaled in a frame 32| pivoted about a pin 329 (Fig, 14). On the frame there are mounted two pins 322, 323 which are in contact with beveled surfaces 323a, 32'3b (Fig. 14k) of an actuating slide 323. By downward movement of the actuating slide 323 the totalizer frame '32| is rotated about its pin 329 and moved from the addition position illustrated, into the subtraction position. This shifting is performed in the machine described in such a manner that a conditioning or preparatory movement is first effected by the setting devices, the iirst machine operation effecting the actual shifting.

The preparatory movement in the machine described is effected by the subtraction key. This key engages a bell crank lever 325 to which is linked a rod 323 (Fig. 14). By depression of the subtraction key the bell crank lever 323 is rotated in counter-clockwise direction thus moving to the left the rod 323 against the action of a spring 335. The right-hand end of the rod 328 is linked to the pin 321 of the lever 333. In pre-setting by means of a subtraction control member 828, a double-armed lever 828 is shifted which rotates a bell crank lever 33| counter-clockwise through a cable 333. This movement is transmitted through a link 332 and a double lever 333 to the pin 321 of the lever 338 whereby the pin is shifted to the left during this pre-setting operation. By this shifting of the pin 321 the lever 338 is rotated clockwise. The lever 338 is provided with two pins 333. 'I'he left pin moves a forked lever 331 fulcrumed on a pin 338 and thereby shifts in clockwise direction about its axis 338 an operating member 339. By this rotation oi' the operating member 333, a shoulder 33| of the operating member 339 is brought below a pin 332 which is provided onfa double lever 333, and by means of a link mechanism moved by the pin |3| (Fig. l) in each addition and subtraction operations of the machine, this double lever 333 is operated in the clockwise direction and subsequently is automatically restored by a spring. Thus the pin 332 encounters the shoulder 33| and thereby shifts downwardly the actuating member 333 and the slide 323 for changing over the totalizer. As shown more in detail in Fig. 14a the rod 328 is jointed by the pin 321 to the lever 333 which rotates about the axis 5| I. The lever 333 carries two pins 333. Fig. 14h shows the length of the pin 321 and of the pins 333. Against the pin 321 bears the double lever 333 which is connected by means of links 332, bell-crank 33|, and link 333, to the setting member 329. The sluiting of the lever 333 may take place either by actuation of the bell-crank 325 or by the pull of the rod 323 of the pin 321. The setting lever 333 can also be shifted by the pressure of the double lever 333 on the pin 321. The lever 336 serves to shift the lever 331, Figs, 14c and 14d, by means ofthe pins 333.

The fork 331 is pivoted at 338 and is connected by means of a pin 5|2 with the operating member 339, Fig. 14e. By means of the rocking movement of the fork shown in Figs. 14o and 14d, the operating member 339 is shifted into the two positions shown in Figs. 14e and 14f. The shifting of the operating member 339 brings the two shoulders 335 and 33| alternatively into cooperal tive relation to the pins 336 and 332 of the lever 333 which is pivoted at SID. If the operating member 339 is shifted in clockwise direction by the forked lever 331, so that the shoulder 33| cooperates with the pin 332, then the operating member 339 is shifted downwardly, whereas in the case of shifting counter-clockwise of the member 333 bythe fork 331, the shoulder 335 cooperates with the pin 336 of the lever 333 whereby the operating member 339 can be moved upwardly. The described shifting of the member 339 thus serves only to preset according to the nature of calculation required, whereas the machine operation takes care of the setting of the totalizer to this mode of calculation. This setting of the accumulator takes place by the downward or upward movement of the operating member 339 this being effected by means of the shift slide 323, Fig. 14. This slide 323 cooperates with two pins 323 and 322. 'I'he upward and downward movements of the shift slide 323 causes the accumulator frame 32| to turn on its pivot 320 so that either one or the other of the two sets of wheels of the accumulator come into engagement with the driving parts.

If a subtraction is not desired during the next machine operation and for this purpose the spring 335 is made inoperative, the machine in the next operation can be automatically reconditioned for addition. Under the influence of the spring 335, a counter-clockwise rotation of the lever 336 and the clockwise rotation of the forked lever 331 can take place. Thereby the actuating member 339 is rotated in counter-clockwise direction about its fulcrum 340 so that the shoulder 345 is brought above the pin 346 of the double-armed lever 343. Since the shoulder is now in its lower position, during the clockwise rotation of the double lever 343, the actuating member 339 is again raised and the accumulator is re-set for addition. The two positions of the actuating member 339 can be determined by locking means 34B.

The invention is obviously not restricted to the machine illustrated and the various possibilities of control herein described. The invention can obviously be applied to many similar modes of construction. In order to avoid the disturbing noise during return of the paper carriage due to striking of the lever |00 on the control members 40, the axis 34.9 ci the lever iii can be shifted upwards and downwards by a cam 15. The axis 34.13 of the lever |00 is connected by links 4|2 jointed at 4| 4 to a double-armed lever co-operating by means of a roller 4|5 with the cam member 16. A spring 4|0 attached to the lever 4|| causes the roller 4|5 to bear against the cam 1E. The shape of the cam 16 is shown in Fig. l. On shifting this cam 16, the axis 349 of the lever |00, by action of the lever 4| and the links 4 I 2 is lowered on return of the paper carriage, so that all the levers |00 are brought out of contact with the control members 40. The paper carriage can thus move back without disturbing noise. As soon as the next machine operation begins if the paper carriage is in position of rest, the axis 349 is again raised by shifting the cam member 16. Those levers |00, the left ends of which do not encounter control members 40, move upwardly by a considerable amount. The left hand ends of those levers |00 which encounter control members 40 are prevented by the latter performing a further upward movement, so that the right ends of the respective levers |00 to which the cables |03 are attached, are pressed upwardly and actuate the corresponding control members by means of the cables |03. The result is that the machine at the very beginning of the operation is set for the desired working steps.

I claim as my invention:

l. A bookkeeping machine comprising a machine-frame, a paper carriage slidably supported on the machine-frame in two guide tracks spaced from each other in an approximately horizontal plane, setting devices arranged in the said machine-frame in the space between the said guide tracks and controlling various functions of the machine, a plurality of bars removably mounted on the carriage in the space between the guide tracks above the setting devices, and a plurality of groups of control members cooperating with the said setting devices, said bars being of I- shaped cross-section the flanges of which being provided with slots of a width corresponding to the thickness of the control members, and said control members consisting of flat metal plates of which each plate has contact bevels and pro- Iii vided with a slot and the control members of each group being locked on its bar by a rod introduced immediately above the under ilange of the bar through corresponding apertures of the control members and being effective in a certain column position of the paper carriage.

2. A bookkeeping machine comprising a machine-frame, a paper carriage slidably supported on the machine-frame in two guide tracks spaced from each other in an approximately horizontal plane, setting devices arranged in the said machine-frame in the space between the said guide tracks and controlling various functions of the machine, a plurality of bars removably mounted on the carriage in the space between the guide tracks above the setting devices, a plurality of groups of control members cooperating with the said setting devices, said bars being of I-shaped cross-section the flanges of which being provided with slots of a width corresponidng to the thickness of the control members, and said control members consisting of ilat metal plates of which each plate has contact bevels and provided with a slot and the control members of each group being locked on its bar by a rod introduced immediately above the under iiange of the bar through corresponding apertures of the control members and being eiiective in a certain column position of the paper carriage, a frame removably mounted on the carriage and having front and rear members provided with opposite aligned grooves for reception of the bars, and securing means mounted on the last-named frame for holding the bars in place relatively to the last-named frame.

3. A bookkeeping machine comprising a machine-frame, a paper carriage slidably supported on the machine-frame in two guide tracks spaced from each other in an approximately horizontal plane, setting devices arranged in the said machine-frame in the space between the said guide tracks and controlling various functions of the machine, a plurality of bars removably mounted on the carriage in the space between the guide tracks above the setting devices, a plurality of groups of control members cooperating with the said setting devices, said bars being of I-shaped cross-section the ilanges of which being provided with slots of a width corresponding to the thickness of the control members, and said control members consisting of iiat metal plates of which each plate has contact bevels and provided with a slot and the control members of each group being locked on its bar by a rod introduced immediately above the under flange of the bar through corresponding apertures of the control members and being effective in a certain column position of the paper carriage, a frame removably mounted on the carriage and having front and rear members provided with opposite aligned grooves for reception of the bars, and a plate covering the last-named frame for securing the bars in place relatively to the last-named frame.

4. A bookkeeping machine comprising a machine-frame, a paper carriage slidably supported on the machine-frame in two guide tracks spaced from each other in an approximately horizontal plane, setting devices arranged in the said machine-frame in the space between the said guide tracks and controlling various functions of the machine, a plurality of bars removably mounted on the carriage in the space between the guide tracks above the setting devices, a plurality of groups of control members cooperating with the said setting devices, said bars being of I-shaped cross-section the nanges of which being provided with slots of a width corresponding to the thickness of the control members, and said control members consisting of flat metal plates of which each plate has contact bevels and provided with a slot and the control members of each group being locked on its bar by a rod introduced immediately above the under ilange of the bar through corresponding apertures of the control members and being effective in a certain column position of the paper carriage, a frame removably mounted on the carriage and having front and rear members provided with opposite aligned grooves for reception of the bars, the bars being I-shaped in cross-section wherein the under flanges oi the bars are cut away on the ends of the bars and the width of the grooves of the lastnamed frame corresponding to the thickness of the center web of the I-shaped bars, and securing means mounted on the last-named frame to hold the bars in place relative thereto.

5. A bookkeeping machine comprising a machine-frame, a paper carriage slidably supported on the machine-frame in two guide tracks spaced from each other in an approximately horizontal plane, setting devices arranged in the said machine-frame in the space between the said guide tracks and controlling various functions of the machine, a plurality of bars removably mounted on the carriage in the space between the guide tracks above the setting devices, a plurality of groups of control members cooperating with the said setting devices, said bars being of I-shaped cross-section the ilanges of which being provided with slots of a width corresponding to the thickness of the control members, and said control members consisting of flat metal plates of which each plate has contact bevels and provided with a slot and the control members of each group being locked on its bar by a rod introduced immediately above the under ilange of the bar through corresponding apertures of the control members and being effective in a certain column position of the paper carriage, a frame removably mounted on the carriage and having side braces and front and rear members provided with opposite aligned grooves for reception of the bars, and securing means a,ase,ooo

mounted on the last-named frame to hold the bars in place relative thereto. the lastnamed frame being held in place on the carriage by at least two fastening screws secured in projecting portions of the carriage and the screws having projecting tapered ends entering in counterlsunk bores in side braces of the last-named rame.

6. A bookkeeping machine comprising a machine-frame, a paper carriage slldably supported on the machine-frame in two guide tracks spaced from each other in an approximately horizontal plane, setting devices arranged in the said machine-frame in the space between the said guide tracks and controlling various functions of the machine. a plurality of bars removably mounted on the carriage in the space between the guide tracks above the setting devices, a plurality of groups of control members cooperating with the said setting devices, said bars being of I-shaped cross-section the flanges of which being provided with slots of a width corresponding to the thickness of the control members, and said control members consisting of flat metal plates of which each plate has contact bevels and provided with a slot and the control members of each group being locked on its bar by a rod introduced immediately above the under flange of the bar through corresponding apertures of the control members and being effective in a certain column position of the paper carriage, a frame removably mounted on the carriage and having side braces and front and rear members provided with opposite aligned grooves for reception of the bars, securing -means mounted on the last-named frame to hold the bars in place relatively to the last-named frame. and at least two fastening screws secured in projecting portions of the carriage having projecting tapered ends to hold the last-named frame in place on the carriage, said tapered ends of the screws being provided in counter-sunk bores in side braces of the lastnamed frame and the axes of the fastening screws being slightly displaced in downward direction relatively to the axes of the counter sunk bores.

IEINRICH KONRAD FRIEDRICH EWALD. 

